📦 What is a Barcode Reader? Have you ever seen shopkeepers scan items at a store using a small device that makes a beep sound? That device is called a barcode reader . 🧾 What is a Barcode? A barcode is a series of black and white lines with numbers written under it. It holds information like the price, product name, and item code. You’ll find barcodes on almost every product you buy—like snacks, books, clothes, and even medicines! 🔍 What is a Barcode Reader? A barcode reader , also called a barcode scanner , is a machine that can read these barcodes. It quickly scans the lines and converts them into numbers or data that a computer can understand. 💡 How Does It Work? The barcode reader shines a red light on the barcode. The black lines and white spaces reflect the light differently. A sensor in the scanner reads the reflection. The scanner then sends the information to the computer or billing system. 🛒 Where Are Barcode Readers Used? Supermarkets – ...